Biochemistry

н a-D-Glucose 0-D-Fructose Sucrose Due to the lack of free semi-acetal hydroxyl, this disaccharide does not have reducing properties. There are a lot of sucrose in the stems, roots, tubers and fruits of plants . In sugar beets, it accumulates up to 24 %, in cane stalks - up to 20%. The process of splitting sucrose into glucose and fructose is called sugar inversion , and hydrolyzed sucrose is called invert sugar. Sucrose undergoes alcohol, sour milk and butyric acid fermentation. Lactose - milk sugar - consists of 0-galactose and a-glucose. It is found in milk and dairy products , in the pollen tubes of some plants. a-Glucose 0-Galactose Lactose Lactose is well absorbed by the body after cleavage in the small intestine by the action of the enzyme lactase (0-galactosidase). With a congenital or acquired deficiency of this enzyme, milk intolerance occurs that is manifested by bloating due to increased gas formation, impaired bowel function (loose stool). Cellobiose is formed during the enzymatic hydrolysis of cellulose under the action of an enzyme produced by microorganisms, cellulase . 146